Grade High Power Graphite Electrode

Grade High Power Graphite Electrodes (HP) are mainly made of high-quality needle coke, coal pitch and other raw materials, which are processed by calcination, medium crushing, screening, batching, kneading, pressing, roasting, impregnation, graphitization and other processes. After impregnation treatment, the performance is higher than that of the RP electrode, the resistivity is relatively low, and the allowable current density is large. Normally, HP graphite electrodes are suitable for high power electric arc furnaces with a melting capacity of 400Kv.A/t per ton. High power graphite electrodes have fantastic features of higher purity, density and chemical stability. Also, low coefficient of thermal expansion, resistance to cracking and spalling and thermal shock support them widely used in various DA/AC high power electric arc furnaces. Thanks to its stability, it is great for be used in antioxidant treatment process with the advantage of low consumption and operation life. It is well known that HP graphite electrodes Compact and uniform structure, good electrical and thermal conductivity, high mechanical strength, and strong oxidation and corrosion resistance at high temperatures.

 

Production process of Grade High Power Graphite Electrode

 

Physical & Chemical Properties of HP Graphite Electrodes

Items	Classification	Unit	Nominal Diameter (mm)
			HP Graphite Electrode
			200-400	450-500	550-600
Resistivity	Electrode	μΩm ≤	7.0	7.5	7.5
	Nipple		6.3	6.3	6.3
Bending Strength	Electrode	Mpa ≥	10.5	10.0	8.5
	Nipple		17.0	17.0	17.0
Young's Modulus	Electrode	Gpa ≤	14.0	14.0	14.0
	Nipple		16.0	16.0	16.0
Bulk Density	Electrode	g/cm3 ≥	1.60	1.60	1.60
	Nipple		1.72	1.72	1.72
CTE(100℃-600℃)	Electrode	×10-6/℃ ≤	2.4	2.4	2.4
	Nipple		2.2	2.2	2.2
Ash Content	Electrode	% ≤	0.5	0.5	0.5
	Nipple

Note: Ash Content is only for reference.

 

Applications of Grade High Power Graphite Electrode

HP graphite electrodes are primarily applied in electric arc furnace steel manufacturing. Due to its specific features, graphite electrodes can give high levels of electrical conductivity and the capability of consistency in a very high level of heat. Similar to the smelting process, it also can be applied to the refinement of steel or other raw materials. Overall, HP graphite electrodes are a key element in the production of steel and other metals, contributing to the improvement of the non-metallic mineral products fields. From customers' feedback in Xinhui Carbon Company, they are very satisfied with our HP graphite electrode products and work very well in industries such as metallurgy, minerals and energy.